From a67fe05375551c8d9cfd83d3c82521bba711625c Mon Sep 17 00:00:00 2001
From: Bob Mottram <bob@libreserver.org>
Date: Sun, 21 Jan 2024 10:37:03 +0000
Subject: [PATCH] Support for webfinger context within jsonld signature
 verification

---
 context.py  | 20 +++++++++++++++++++-
 pyjsonld.py |  9 +++++++++
 2 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/context.py b/context.py
index 80ac79df9..f75982842 100644
--- a/context.py
+++ b/context.py
@@ -19,7 +19,10 @@ VALID_CONTEXTS = (
     "*/litepub-0.1.jsonld",
     "https://litepub.social/litepub/context.jsonld",
     "*/socialweb/webfinger",
-    "*/socialweb/webfinger.jsonld"
+    "*/socialweb/webfinger.jsonld",
+    "https://www.w3.org/ns/did/v1",
+    "https://w3id.org/security/multikey/v1",
+    "https://w3id.org/security/data-integrity/v1"
 )
 
 
@@ -160,6 +163,21 @@ def getApschemaV1_20() -> {}:
     }
 
 
+def get_webfinger_context() -> {}:
+    # https://domain/socialweb/webfinger.jsonld
+    # https://domain/socialweb/webfinger
+    return {
+        "@context": {
+            "wf": "https://purl.archive.org/socialweb/webfinger#",
+            "xsd": "http://www.w3.org/2001/XMLSchema#",
+            "webfinger": {
+                "@id": "wf:webfinger",
+                "@type": "xsd:string"
+            }
+        }
+    }
+
+
 def getApschemaV1_10() -> {}:
     # https://domain/apschema/v1.10
     return {
diff --git a/pyjsonld.py b/pyjsonld.py
index e800a1fca..4a514ee84 100644
--- a/pyjsonld.py
+++ b/pyjsonld.py
@@ -47,6 +47,7 @@ from context import get_litepub_social
 from context import get_v1schema
 from context import get_v1security_schema
 from context import get_activitystreams_schema
+from context import get_webfinger_context
 
 try:
     from functools import cmp_to_key
@@ -439,6 +440,14 @@ def load_document(url):
                 'document': getLitepubV0_1()
             }
             return doc
+        elif (url.endswith('/socialweb/webfinger') or
+              url.endswith('/socialweb/webfinger.jsonld')):
+            doc = {
+                'contextUrl': None,
+                'documentUrl': url,
+                'document': get_webfinger_context()
+            }
+            return doc
         elif url == 'https://litepub.social/litepub/context.jsonld':
             doc = {
                 'contextUrl': None,